Dell Inspiron 580 (Late 2009) - Manual (Page 61)

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Basic Specifications
Memory
Connectors four internally‑accessible
DIMM sockets
Capacities 1 GB, 2 GB, and 4 GB
Memory type DDR3 DIMM; non‑ECC
memory only
Minimum 1 GB
Maximum 8 GB
NOTE: For instructions on upgrading
memory, see the Service Manual at
support.dell.com/manuals.
Video
Integrated Intel GMA HD
Discrete PCI Express x16 card
(optional)
Audio
Type integrated 7.1 channel,
High Definition Audio
Communications
Wireless (optional) PCI Express Wi‑Fi card
supporting 802.11a/b/g/n
Modem (optional) PCI modem